LT1460GCZ-10-PBF データシートの表示（PDF） - Linear Technology

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LT1460GCZ-10-PBF

Micropower Precision Series Reference Family

Linear Technology 

LT1460

Applications Information

CL = 1µF. RS should not be made arbitrarily large because

it will limit the load regulation.

Figure 6 to Figure 8 illustrate response in the LT1460-5.

The 1V step from 5V to 4V produces a current step of

1mA or 100µA for RL = 1k or RL = 10k. Figure 7 shows the

response of the reference with no load capacitance.

The reference settles to 5mV (0.1%) in less than 2µs for

a 100µA pulse and to 0.1% in 3µs with a 1mA step. When

load capacitance is greater than 0.01µF, the reference begins

to ring due to the pole formed with the output impedance.

Figure 8 shows the response of the reference to a 1mA

and 100µA load current step with a 0.01µF load capacitor.

Figure 9 to Figure 11 illustrate response of the LT1460-10.

The 1V step from 10V to 9V produces a current step of

1mA or 100µA for RL = 1k or RL = 10k. Figure 10 shows

the response of the reference with no load capacitance.

The reference settles to 10mV (0.1%) in 0.4µs for a 100µA

pulse and to 0.1% in 0.8µs with a 1mA step. When load

capacitance is greater than 0.01µF, the reference begins

to ring due to the pole formed with the output impedance.

Figure 11 shows the response of the reference to a 1mA and

100µA load current step with a 0.01µF load capacitor.

VIN = 5V

CIN

0.1µF

LT1460-5

VOUT

RL

CL

VGEN

5V

4V

1460 F06

Figure 6. Response Time Test Circuit

VIN = 12.5V

CIN

0.1µF

LT1460-10

VOUT

RL

CL

VGEN

10V

9V

1460 F09

Figure 9. Response Time Test Circuit

VGEN

VOUT

VOUT

2µs/DIV

Figure 7. CL = 0

5V

4V

RL = 10k

RL = 1k

1460 F07

VGEN

VOUT

VOUT

2µs/DIV

Figure 10. CL = 0

10V

9V

RL = 10k

RL = 1k

1460 F10

VGEN

VOUT

VOUT

16

5V

4V

RL = 10k

RL = 1k

10µs/DIV

1460 F08

Figure 8. CL = 0.01µF

VGEN

VOUT

VOUT

10V

9V

RL = 10k

RL = 1k

10µs/DIV

1460 F11

Figure 11. CL = 0.01µF

1460fc

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